Insulation R-Value Estimator
DOE 2021 recommendations by climate zone — new construction and retrofit.
←
Select your state to see recommendations
Select your state to see recommendations
DOE 2021 recommendations by climate zone — new construction and retrofit.
R-value recommendations based on DOE 2021 energy efficiency guidelines. Cost estimates for US DIY/contractor supply, 2024-2025. Thickness calculated as R-target / R-per-inch.